Supercharger for internal combustion engines



June20,1 933. G OSTERBERG 1 1,914,382

SUPERCHARGER FOR INTERNAL COMBUSTION ENGINES Filed May 1, 1950 IN VEN TOR.

Patented June 20, 1933 UNITED STATES PATENT OFFICE GOTTHARD S. OSTERZBERG, OF TIDAHOLH, SWEDEN, ASSIGNOR T ROBERT SUCZEK, OF

I GROSSE POINTE PARK, MICHIGAN SUPER/CHARGER FOR INTERNAL COMBUSTION ENGINES Application filed Kay 1,

The invention relates to superchargersdriven by the exhaust gases from an internal combustion engine through the medium of a turbine.

The main object of my invention is to create an efiicient and cheap unit producing compressed air for supercharging internal combustion engines or any other purpose.

Another object of this invention is to prevent the turbine vanes from overheating through the exhaust gases, by cooling them with the air flowing through the compressor.

Withthese and other advantages and objects of my invention in view, together with means whereby the same may be carried out, my invention consists in the arrangement, construction and combination of various parts of my new device and method of its operation as described in the specification,

2 claimed in the claims and illustrated in the accompanying drawing.

It will be understood that some of the particular constructions and arrangements embodied and shown, have been shown for illustrative purposes only and that the invention as defined by the claims thereunto appended may be otherwise embodied without departure from the spirit and scope of the invention.

Fig. 1 is a longitudinal section through the turbine and the blower according to my invention.

Fig. 2 is a part of a transversal section along line 2-2 through Fig. 1.

Fig. 3 is a development of the turbine wheel buckets partly in section.

As shown in Fig. 1 hub 4 mounted on shaft 5 and supported by bearings 6 and 7 carries the blower vanes 8 and also the turbine vanes 9. The turbine consists of a hollow drum '10 and the vanes are either cast or milled into the periphery of such drum in the form of buckets 9. The vanes 8 of the blower connect the drum 1() to th hub 4:.

1930. Serial No. 449,070.

11 is the motive fluid inlet, in this case the exhaust gases from an internal combustion engine. 12 is the nozzle passage discharging the expanded gases into the buckets of the turbine. The spent gases, after performing the work in the turbine, leave the housing at 13.

The air enters the blower impeller at 14, flows radially out through the action ofthe centrifugal force, and when approaching the wall forming the turbine buckets it is forced to perform a sharp turn into passage 15 formed by bafiles 16 and 17, both carried by the discharge nozzle 18, supported by the bracket 19 and the turbine housing 20. Flange 21 may be connected to the engine intake manifold or to any other desirable place where the compressed air is required.

To nozzle 18 is connected by ribs 22 a guiding core 23 which carries baffle plate 16 and bearing -7 with gland 24. The other bearing 6 is carried by a tubular member 25 ribbed in a convenient way to housing- 20 by ribs 26.

The expanding exhaust gases or the motive fluid, after leaving the nozzle at high velocity, flow into the semi-circular buckets 9, are diverted therein by 180 degrees, relative to the bucket,,giving up some of their velocity which is converted into work by the turbine drum 10 and transmitted through the blowervanes 8 into air pressure rise.

While flowing through the buckets the hot gases heat up the walls of the turbine drum and of the buckets to such an extent that it is necessary to cool them. This I accomplish very effectively by the arrangement of the turbine buckets on the periphery and forcing the air issuing from the blower vanes to impinge against the drum periphery with high velocity and performing a sharp turn of almost 180 degrees by changing its direction from radially outward to radially inward.

The turbine does not require any exp1ana 'tion and anybody versed m the art will see for air, a rotating member comprising the vanes for compressing the air and vanes adapted to drive the air compressing vanes by exhaust gases from an internal combustion engine, a wall separating the exhaust gases and the air through which heat is absorbed from the exhaust gases, both the air and the exhaust gases erforming a turn of over 90 degrees while owing along the said wall.

GOTTHARD S. OSTERBERG.

and conducting the air, a turn in such passage, turbine vanes outside the drum mounted at the turn in such passage, the turbine vanes receiving exhaust gases from the engine and diverting the gases more than 90 degrees. v

2. A compressor for internal combustion engines comprising a stationary element having the purpose of a housing, a hollow rotor within the stationary housing, means to conduct fluid to be compressed into the inside of the rotor, means to raise the pressure of the fluid within the rotor, means to guide the fluid within the rotor first in a direction away from the axis of the rotor and thereafter towards the axis, turbine buckets disposed on the periphery of the rotor-and placed at the turn of the fluid from the direction away to the direction toward the axis and means to force the motive fluid driving the turbine buckets to perform a turn of over 90 degrees relative to the buckets.

3. A supercharger for internal combustion engines comprising a blower element rotating around an' axis, vanes within the element causing the air to flow in a direction first away from the axis, means to guide the air after leaving the vanes to perform a turn and to flow in a direction towards the axis, means toconduct exhaust gases from the engine into turbine buckets carried by the blower element adjacent to the place where the air performs the turn, said buckets being so disposed and formed as to cause a cooling effect by the air on the buckets and to force the exhaust gases to perform a relative turn of over 90 degrees.

4, A blower comprising a rotor revolving around an axis and having an inlet and an outlet, means to force the air to flow between the inlet and the outlet first in a direction away and thereafter towards the center of rotation and to perform a turn at the periphery of the rotor, turbine buckets on the outside-of the rotor to receive motlve fluid for driving the blower, the buckets being disposed at the place where the air performs the turn, and the total angle of deflection through the buckets being between 90 and 180 degrees.

5. A supercharger for internal combustion engines having an inlet and an outlet 

